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Blade Grinder - Why You Shouldn't Use One

A blade grinder employs a propeller-like blade (think blenders) to chop coffee beans. They are much cheaper than burr grinders and easy to clean but don't yield uniform grounds and can lead to over-extraction and bitterness in your coffee.

To enjoy a top-quality coffee experience, you must have uniform particle distribution. This can only be achieved by using a burr mill. It's no wonder that coffee snobs hate burr grinders.

Inconsistent Grinds

You may have noticed that the results of your grinding aren't always consistent when you've used a blade grinder over a long time. This is because the grinding device has likely been worn down and dull. As the grinder gets older it will produce different-sized pieces of beans. This results in ground with different degrees of coarseness. It's challenging for your coffee maker to create a consistent, balanced flavor with these various-sized particles.

Blade grinders use a propeller-like rotating blade to break the beans. It cuts the beans into smaller and smaller pieces, which are then put into a catcher through a screen. This method is efficient, but it doesn't produce the best grind possible for your beverage. A better option is the burr grinder. A burr grinder is a larger machine with a powerful motor and two grinding burrs. The burrs are set at an exact distance from one another which determines the fineness of the coffee you grind.

If the burrs are close to each other, they'll crush the beans rather than cut them. This results in a finer more refined, less coarse ground. They also tend to be brittle, which can negatively affect the taste of your coffee. If the burrs, however, are not evenly spaced they'll result in large chunks of coffee that have been coarsely ground. It is important to select an espresso grinder with a setting that matches the desired coarseness.

A sharp, properly-adjusted blade will produce a consistent and fine grind for your coffee. If you notice that your grind is becoming increasingly uneven, it could be time to replace the blade or burrs. If you haven't yet done so, you should also alter the grind setting to achieve a more even grind.

It's also worth mentioning that if your grinder produces clumped up grounds, this is a sign of worn-out or damaged blades. The clumping occurs when tiny particles stick to one another and larger pieces of ground, creating larger granules which don't dissolve in water. As your burrs become more and dull it will happen more frequently.

Uneven Extraction

No matter if you're using drip, French press, or pour-over, the size of your ground plays an crucial role in preserving flavor. Uneven ground sizes lead to uneven extraction and a sloppy cup of coffee.

When the beans are pushed through a blade grinder, they are cut and shred randomly, resulting in an uneven distribution of grind particle sizes. A blade grinder can create a mix of large pieces as well as dust-sized particles and everything between. These different grind sizes produce at different rates, which results in a sloppy and often bitter cup of coffee.

In addition, the lack of uniformity creates problems when the tamping process and filtration. With a burr mill you can achieve an even particle size, allowing better tamping and filtering, which prevents over-extraction. With a blade grinder, it is more difficult to attain an even grind. You may encounter tamping that is inconsistent from side to side or using the Stockfleth method (which takes some practice).

The high speed and heat generated by blade grinders are another issue. The grounds can be burned and create a bitter taste. burr mill grinder grinders are cooler and don't produce as much heat, which helps preserve the flavors of the bean.

Another drawback of a blade grinder is that it's very easy to over-grind your beans. Running the grinder continuously produces a lot of heat, which can cause your beans to be excessively extracted, which can result in bitter brew. To avoid this, you should always stop the grinder before switching it back on.

Blade grinders are an easy, inexpensive way to grind coffee grinders types at home. However they're not the ideal option for those who are serious about their coffee brewing. You should stick to whole beans and burr grinders for the most effective results. Invest in a quality coffee grinder that meets all your needs.

If you're looking to upgrade from your blade grinder, take a look at our top picks for the best burr grinders on the market. The right choice of grinder is a crucial choice that will impact the quality of your brewing and overall cup quality, so take into consideration your budget, your space, and the method you prefer to use when making your decision.

Burned Grounds

With a blade grinder, you're using a sharp blade that rotates like a blender at a rapid speed to chop up the beans. The blade's rapid movement produces heat, which can burn some of the coffee machines with grinder grounds. These particles will ruin the flavor of your coffee and are not ideal to brew.

For a truly exceptional experience, a uniform distribution of particles is essential to ensure the best Burr grinder flavor extraction. Since blade grinders break the beans into different sized pieces, small and large it is difficult to achieve this consistency. A burr grinder however can ensure an even distribution of particles that can be reproduced over many brews.

While the advantages of a blade grinder include its low cost and speedy execution, its main disadvantages are that it produces heat when it is used, creates variations in the size of the grind and lacks control over final particle size. There are ways to improve results using this type of grinder, despite its inherent limitations.

When paired with a burr grinder, users can easily adjust the distance between the grinding discs to fine-tune the exact size of the ground that they prefer. This allows them to extract all desired flavours from their favourite roast beans every time. However, creating a quality drink using a blade grinder requires a lot of trial and error.

Angle grinders are powerful devices that should only be employed by professionals. If it is used incorrectly it can result in an unsafe condition known as grinding burn, that causes localized changes to the metallographic structure of the workpiece's surface. This can lead to cracking that, if left unchecked will eventually lead to macropitting and tooth fracture.

Grinding burn is a serious issue that can be caused by a range of reasons, including excessive grinding pressure, inadequate cooling or inadequate training for operators. If you plan on using an angle grinder, make sure you wear the correct PPE including gloves and a face shield, safety glasses, steel toe boots and long sleeves. This will help prevent any sparks of heat from flying off the machine and hitting people or equipment near by. Sparks can be capable of reaching temperatures as high as 3,600 degF and be destructive to materials like paint or metal.

Brew that isn't great.

A blade grinder will chop your beans in a random manner and leave you with different-sized ground. These different sizes of grounds are extracted at different rates in your coffee maker, and this leads to the cup being weak or bitter of brew. The issue is that it can ruin the balance that makes for a great cup of coffee. The soluble compounds in the beans are removed over time, which creates the flavor that makes your coffee scrumptious.

You've probably heard it said that using the burr mill rather than a blade mill is the best way to make an excellent brew. Many people aren't aware how to use a grinder or even what it does and so they purchase one of the inexpensive, inflexible blade grinders that are easy to find in grocery stores and kitchen-type places.

The grinders that are available for sale are essentially two-pronged blades that are located at the bottom of an enclosed chamber. It spins rapidly and cuts anything it comes in contact with including beans. Press a button to start the grinder and the blade chops up your beans into a variety of differently sized pieces. The smaller pieces are tossed to the bottom, and get chopped all over again, while the larger pieces remain at the top of the chamber. This causes uneven ground which are difficult to measure accurately. This is the reason you can't be certain of the amount of ground coffee you made with your grinder.

These grinders could also burn your beans, ruining your coffee. The heat can also take away some of the flavor of the beans, which means you're left with a bland cup of coffee.

If you have been grinding your coffee using a blade mill, it's time to upgrade to a more efficient. A burr mill can complete the job at a fraction of the cost, and provide an even better result. It's worth it. Try an manual burr mill, such as the Rhino Hand Grinder if want greater control over the brew. These grinders feature burrs but are powered by a crank, which provides more control than an electric or plug-in grinder.